var golang.org/x/net/idna.idnaSparse

2 uses

	golang.org/x/net/idna (current package)
		tables13.0.0.go#L564: 		return uint16(idnaSparse.lookup(n, b))
		trie.go#L42: var idnaSparse = sparseBlocks{

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)